vectors c 2b 2b set the size

1#include <iostream>
2#include <vector>
3
4using namespace std;
5
6int main(void) {
7   vector<int> v;
8
9   cout << "Initial vector size = " << v.size() << endl;
10
11   v.resize(5, 10);
12   cout << "Vector size after resize = " << v.size() << endl;
13
14   cout << "Vector contains following elements" << endl;
15   for (int i = 0; i < v.size(); ++i)
16      cout << v[i] << endl;
17
18   return 0;
19}